Nexus RV - honest mistake or something else? (updated 1/21)

Had same problem, VIN reflected 2003 chassis and bill of sale showed it as a 2004 model year Tioga. AAA wanted to insure the rig as a 2003, I had to provide AAA a copy of the bill of sale to get them to insure it as a 2004. When I sell the rig, I'll simply give the new owner a copy of the bill of sale to prove the correct model year.